Cosmo's Diner #myCosmos

My friend and I come to Cosmo's all the time and we love it!

We usually get the 'YOU ARE FABULOUS' (two eggs, bacon, home fries and toast). Eggs and bacon are always made exactly to order (soft poached, crispy bacon, thank you very much.)

The service is impeccable! Friendly, efficient, and attentive - even when a surprise walk-in group of 30 hockey players pops by, my food arrives quickly, hot, and delicious. I love that the coffee comes with a carafe and my cup is always full.

The music and décor is fifties and fun. Amenities are clean. Prices are very reasonable. Highly recommend.

Food is always amazing here! So many options! We got the breakfast lasagna and OMG it was amazing

Croissant cheese ham. Very good. I would like to know where your other restaurant is located.

Wow! What a menu. Unique delicious food, good service in a spotless restaurant. We liked it and are telling all our friends

Food was good. The waitress is a sweetheart too. I have to ding it because the SMELL of dank musty carpet rules the air. Smells like a flood happened there and nobody really cleaned it well

Cute little place that clearly has the attentions of locals. The one server was doing her best to keep up but an additional pair of hands would be a great help! I had to rush away taking my salad in a box.but it was amazing. I will visit again.

If I could give zero stars I would. Hands down the worst breakfast restaurant I've ever been too. We (table of 3) waited in the tiny doorway for about 20 minutes waiting to be seated. The waiter was very pleasant but not very attentive. 2 of us ordered the choose your own breakfast, and one of us ordered a pre set breakfast combo. The menu is very confused with way way too much on it. After waiting about 45 minutes after ordering the food finally came out and we all just looked down and looked up at each other. The tater tots and bacon were so over cooked it was shocking they would send it out! Bacon was black and like glass, literally glass. Even the table beside us didn't eat there's and the waitress didn't notice until they were ready to leave and cooked them more to take home. The tater tots just crumbled into dust. The scrambled eggs were cooked, but the easy over were hard over. Even the bread has no butter and we had to ask for more. No one enjoyed the half cooked and burnt on one side sausages either and left pretty much all of them in our plates. For $32 for 2 people, it's a mistake we won't ever make again. The inside is dirty and very old, and not a nice retro old. After using the bathroom and seeing how filthy it was I still had high hopes for the food, but was truly disappointed. I'm not sure how they have won all the readers choice awards from Niagara this week they have all over the counter. Save your money and go somewhere else that won't make you sick.

This diner is quick and efficient for a bite to eat. Pancakes were delicious. Our server was prompt and polite.

Definitely lived up to the hype. Ordered fruit and got a nice little bowl with pineapple, banana, apples and berries. Bacon was lean and tasty. Home fries were to die for.

Service was flawless.

Highly recommend.

It's a cute breakfast place. I didn't enjoy the breakfast sausage, however, as it had a peculiar taste to it. The rest of the food was delicious and cooked perfectly. Homefries were my favorite!

I love breakfast and I continue to seek out diners and breakfast nooks, in every town I travel to. Cosmos Diner is still the best!

We were from out of town and the breakfast was fast, very delicious. Western sandwich best I've ever had.

Nothing fancy inside but the staff are friendly and the food is delicious with so many options!

Had breakfast here and it was delicious!
I had the avacado and bacon eggs benedict with home fries! It was soo good, the home fries are the best I've had.
Others at the table got breakfast specials.eggs, home fries, bacon and toast. The portion are generous!
My niece got the kids pancakes and she was very happy.they were big! Lol
The staff was so friendly and the service was fast!
Worth a visit next time you are in Thorold!

Been coming here when I'm in thorold since 2000. Always the same quality. Super retro inside I LOVE that they play oldies music. Reminds me of my momma. The food is deeeeelish and for great prices. And the fresh squeezed juice is magnificent. I would recommend highly. My fave is the 5 for $10 breakfast, the waffles, and of course the OJ. If you're ever in thorold give them a try.

Where have you been all my life? I could not finish my breakfast plate it was so big and so great! Amazing food, even better service (if that is possible)!

The menu is large and the food is really good. My only complaint is the cleanliness. It needs a real good clean. Please put the coffee pots in the dishwasher!

The best diner in Thorold. Amazing food, the loveliest staff, and just an overall wonderful retro atmosphere.

Love the crepe platter comes with a crepe, eggs and your choice of side for $15. Only suggestion is you should add drinks to your online orders

Found this gem on skip and had to try it. I was blown away! It was easily the best breakfast I have had in such a long time! The comet (peanut butter and jam stuffed french toast, dipped in pancake batter then deep fried) is a must try, amazing take on an old classic. Corned beef hash is also amazing. So many amazing things to say about this place, but you should see for yourself! Can't wait to order again and hopefully dine-in very shortly.

So glad Cosmo's Diner is open for curbside pickup and delivery! Now we can enjoy our brunch favourites at home in our pj's.:) Can't imagine going through this time in our lives without a little Cosmo's comfort food, especially the Mediterranean Hash! Sooo good!

Really good atmosphere, amazing food for a good price and good service. The home fries and hollandaise sauce were especially good. I would definitely recommend!

Nice nostalgic place. Menu is impressive and extensive. The staff are very courteous and friendly.

Our server was great.the food was alright.the over easy eggs were hard.our main concern was the lipstick stains on my coffee mug.one lip stain on either side of the mug.we told our server and she brought us a new cup.second my boyfriend found a long black hair mixed in with his eggs and hash browns.well hidden but it was still spotted.we took photos also.

Ate there last week and the Food was the Worst food I’ve eaten in a long time.
The place was not even better.
That restaurant can’t be recommended just avoided

First time in I was happy with the everything. Breakfast is well priced and tasty.

Second time in this morning I was disappointed. The cutlery was dirty and home fries were way greasier than before. I looked around and noticed the place needs a little tlc.

Overall the service is great but cleanliness isnt great.

Have been a number of times to this little gem, and never once disappointed. The decor is fun, the staff are friendly, and the food is great.

Where should I start.the food, the service or the environment? Everything about Cosmo's Diner is next to perfect.

We try make it to Cosmo's every Sunday because the experience is that exceptional. The food is borderline perfect and each and every one of the servers give 110%. Will return, consistently

By far my favorite breakfast place in the region. Great food, good prices and a huge amount variety of menu options.

Was here a few years ago & remember the breakfast poutine being much better/larger & was a little unwell after. We were missed for about 10 minutes due to the "seat yourself" but will go back for maybe another breakfast option:)

The food was great! They cooked everything to how we liked it and were friendly and helpful with food selection. I would recommend this place for sure, especially if you like 50's diners settings

Really lovely dinner with good service. Price is of value of the meal for sure. And it is kid friendly. They do have freshly squeezed orange juice! Deffinately recommend this place when they come to visit Niagara.

Honestly its average at best. Cutlery was filthy, which was awful to see since the spoon came in the coffee - when we pulled it out it was crusted with gunk. However, the server was quick to apologize and replace the dishes and coffee.

The eggs and pancakes and toast were great. The hash browns were mediocre, and the bacon and sausage were quite frankly terrible - the sausage looked like it had been cooked, refrigerated, and then deep fried. It had a hard crust that went through half the sausage.

It could just be a bad day, and I didn't try their infamous stuffed French toast - judging by the pancakes it would be amazing. I wouldn't go there again for a traditional breakfast, but I'll probably try again for their specialty at some point.